How to make a PLASTER MOLD (and how to use it!)

1- How to calculate the volume of plaster mix you need Find the container’s volume: • For a cylinder: Volume = π × r² × h • For a cube/box: Volume = side³ (or length × width × height) Then, subtract the piece’s volume: • Container volume − Piece volume = Mix volume 2- Simplified formula (the one I recommend) Plaster (grams)= Volume × 0.885 Water (grams/ml)= Volume × 0.615 Example for 1000 cm3: Plaster= 1000 cm3 × 0.885 Water= 1000 cm3 × 0.615 3- Another way: Volume × 1.5 = Mix required (grams) Then split into plaster and water: • Plaster (grams)= Mix × 0.59 (59%) • Water (grams/ml)= Mix × 0.41 (41%) Example for 1000 cm3: 1000 cm3 × 1.5= 1500 grams Plaster= 1500 × 0.59 Water= 1500 × 0.41 4- (for those who want to do the maths!) Water to plaster ratio: 70 ml of water for every 100 grams of plaster (41%/59%) Density of plaster powder: 2.3 g/cm³ Density of set plaster block (using this ratio): 1.5 g/cm³ _________________________________________________________________ Music: Imagination - Artist: Ryan Track: Off She Goes Music composed and recorded by Oak Studios Creative Commons - Attribution ND 4.0    • [No Copyright Music] Off She Goes - Acoust...